News in the railway press that the prototype HST has been fitted with a Valenta engine and was 'fired up' on July 1st 2013 gives us an excuse to show a picture of that train in Cornwall. Captured here west of Chacewater on 18th March 1975 by Sid Sponheimer.

The HST prototype passes the site of the Blackwater Triangle on the 18th March,1975 Copyright Sid Sponheimer